Modeling PTEN overexpression-induced microcephaly in human brain organoids.
Modeling PTEN overexpression-induced microcephaly in human brain organoids.
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DOI:
10.1186/s13041-021-00841-3
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发表时间:
2021-08-30
期刊:
影响因子:
3.6
通讯作者:
Li Y
中科院分区:
文献类型:
--
作者:
Dhaliwal N;Choi WWY;Muffat J;Li Y
The phosphatase and tensin homolog (PTEN) protein, encoded by the PTEN gene on chromosome 10, is a negative regulator of the phosphoinositide 3-kinase (PI3K) signaling pathway. Loss of PTEN has been linked to an array of human diseases, including neurodevelopmental disorders such as macrocephaly and autism. However, it remains unknown whether increased dosage of PTEN can lead to human disease. A recent human genetics study identifies chromosome 10 microduplication encompassing PTEN in patients with microcephaly. Here we generated a human brain organoid model of increased PTEN dosage. We showed that mild PTEN overexpression led to reduced neural precursor proliferation, premature neuronal differentiation, and the formation of significantly smaller brain organoids. PTEN overexpression resulted in decreased AKT activation, and treatment of wild-type organoids with an AKT inhibitor recapitulated the reduced brain organoid growth phenotypes. Together, our findings provide functional evidence that PTEN is a dosage-sensitive gene that regulates human neurodevelopment, and that increased PTEN dosage in brain organoids results in microcephaly-like phenotypes. The online version contains supplementary material available at 10.1186/s13041-021-00841-3.
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作者:
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通讯作者:
Jaenisch R
影响因子:
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通讯作者:
Walsh CA
DOI:
10.1073/pnas.1719266115
发表时间:
2018-07-03
影响因子:
11.1
作者:
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通讯作者:
Jaenisch, Rudolf